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Extension of Weighted Sum of Gray Gas Data to Mathematical Simulation of Radiative Heat Transfer in a Boiler with Gas-Soot Media
In this study an expression for soot absorption coefficient is introduced to extend the weighted-sum-of-gray gases data to the furnace medium containing gas-soot mixture in a utility boiler 150 MWe. Heat transfer and temperature distribution of walls and within the furnace space are predicted by zon...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi Publishing Corporation
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3988944/ https://www.ncbi.nlm.nih.gov/pubmed/25143981 http://dx.doi.org/10.1155/2014/504601 |
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author | Gharehkhani, Samira Nouri-Borujerdi, Ali Kazi, Salim Newaz Yarmand, Hooman |
author_facet | Gharehkhani, Samira Nouri-Borujerdi, Ali Kazi, Salim Newaz Yarmand, Hooman |
author_sort | Gharehkhani, Samira |
collection | PubMed |
description | In this study an expression for soot absorption coefficient is introduced to extend the weighted-sum-of-gray gases data to the furnace medium containing gas-soot mixture in a utility boiler 150 MWe. Heat transfer and temperature distribution of walls and within the furnace space are predicted by zone method technique. Analyses have been done considering both cases of presence and absence of soot particles at 100% load. To validate the proposed soot absorption coefficient, the expression is coupled with the Taylor and Foster's data as well as Truelove's data for CO(2)-H(2)O mixture and the total emissivities are calculated and compared with the Truelove's parameters for 3-term and 4-term gray gases plus two soot absorption coefficients. In addition, some experiments were conducted at 100% and 75% loads to measure furnace exit gas temperature as well as the rate of steam production. The predicted results show good agreement with the measured data at the power plant site. |
format | Online Article Text |
id | pubmed-3988944 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Hindawi Publishing Corporation |
record_format | MEDLINE/PubMed |
spelling | pubmed-39889442014-08-20 Extension of Weighted Sum of Gray Gas Data to Mathematical Simulation of Radiative Heat Transfer in a Boiler with Gas-Soot Media Gharehkhani, Samira Nouri-Borujerdi, Ali Kazi, Salim Newaz Yarmand, Hooman ScientificWorldJournal Research Article In this study an expression for soot absorption coefficient is introduced to extend the weighted-sum-of-gray gases data to the furnace medium containing gas-soot mixture in a utility boiler 150 MWe. Heat transfer and temperature distribution of walls and within the furnace space are predicted by zone method technique. Analyses have been done considering both cases of presence and absence of soot particles at 100% load. To validate the proposed soot absorption coefficient, the expression is coupled with the Taylor and Foster's data as well as Truelove's data for CO(2)-H(2)O mixture and the total emissivities are calculated and compared with the Truelove's parameters for 3-term and 4-term gray gases plus two soot absorption coefficients. In addition, some experiments were conducted at 100% and 75% loads to measure furnace exit gas temperature as well as the rate of steam production. The predicted results show good agreement with the measured data at the power plant site. Hindawi Publishing Corporation 2014 2014-03-06 /pmc/articles/PMC3988944/ /pubmed/25143981 http://dx.doi.org/10.1155/2014/504601 Text en Copyright © 2014 Samira Gharehkhani et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Gharehkhani, Samira Nouri-Borujerdi, Ali Kazi, Salim Newaz Yarmand, Hooman Extension of Weighted Sum of Gray Gas Data to Mathematical Simulation of Radiative Heat Transfer in a Boiler with Gas-Soot Media |
title | Extension of Weighted Sum of Gray Gas Data to Mathematical Simulation of Radiative Heat Transfer in a Boiler with Gas-Soot Media |
title_full | Extension of Weighted Sum of Gray Gas Data to Mathematical Simulation of Radiative Heat Transfer in a Boiler with Gas-Soot Media |
title_fullStr | Extension of Weighted Sum of Gray Gas Data to Mathematical Simulation of Radiative Heat Transfer in a Boiler with Gas-Soot Media |
title_full_unstemmed | Extension of Weighted Sum of Gray Gas Data to Mathematical Simulation of Radiative Heat Transfer in a Boiler with Gas-Soot Media |
title_short | Extension of Weighted Sum of Gray Gas Data to Mathematical Simulation of Radiative Heat Transfer in a Boiler with Gas-Soot Media |
title_sort | extension of weighted sum of gray gas data to mathematical simulation of radiative heat transfer in a boiler with gas-soot media |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3988944/ https://www.ncbi.nlm.nih.gov/pubmed/25143981 http://dx.doi.org/10.1155/2014/504601 |
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